Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
UNI 6900 X5CrNi1810 (UNI 6900:1971) and ASTM A959 .- (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
UNI 6900 X5CrNi1810 is typically used for used in kitchen equipment, chemical tanks, piping, architectural panels, food processing equipment, and fasteners., while ASTM A959 .- is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1).
UNI 6900 X5CrNi1810 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy, while ASTM A959 .- is defined under ASTM International, originating from United States.
As per chemical composition, UNI 6900 X5CrNi1810 vs ASTM A959 .- is a 71.3% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
UNI 6900 X5CrNi1810
ASTM A959 .-
Tensile Strength
520-720 MPa
Not specified
Yield Strength
210 MPa min
Not specified
Elongation
45% min
Not specified
Hardness
187 HB max
Not specified
Typical Applications
UNI 6900 X5CrNi1810
Used in kitchen equipment, chemical tanks, piping, architectural panels, food processing equipment, and fasteners.
ASTM A959 .-
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
ASTM A959 .- specifies Cb, N, Ti which are not specified for UNI 6900 X5CrNi1810.
Can UNI 6900 X5CrNi1810 Be Substituted With ASTM A959 .-?
UNI 6900 X5CrNi1810 and ASTM A959 .- share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between UNI 6900 X5CrNi1810 and ASTM A959 .-?
ASTM A959 .- specifies Cb, N, Ti which are not specified for UNI 6900 X5CrNi1810.
Can UNI 6900 X5CrNi1810 be substituted with ASTM A959 .-?
UNI 6900 X5CrNi1810 and ASTM A959 .- share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.